G3588 ὁ - Strong's Greek Lexicon Number

, including the feminine ἡ , and the neuter τό in all their inflections; the (sometimes to be supplied, at others omitted, in English idiom)Derivation: the definite article;

KJV Usage: the, this, that, one, he, she, it, etc.

Thayer:

ὁ, ἡ, τό, originally τός, τή, τό, (as is evident from the forms τοί, ταί for οἱ, αἱ in Hom. and the Ionic writ.), correspondes to our definite article the (Germ. der, die, das), which is properly a demonstrative pronoun, which we see in its full force in Homer, and of which we find certain indubitable traces also in all kinds of Greek prose, and hence also in the N. T.

ὁ, ἡ, τό
ho hē to
ho,hay,to
The masculine, feminine (second) and neuter (third) forms, in all their inflections; the definite article; the (sometimes to be supplied, at others omitted, in English idiom)